The Biosphere Blog

Last week we covered the location of jujube tree nodes and the two types of buds present at each node. (That post has since been updated to include a crash-course description of the branch types as well.) The post ended with a summary of what each bud… more »

Nodes and Buds A ‘bud’, in botany, is a compact, undeveloped shoot which may develop into a twig/branch, leaf, or flower. The region in which buds are located is called a node, and the area between nodes is called an internode. Nodes are the… more »

UPDATE: This post didn’t make it clear at the time that these trees were handled contrary to norms in the interests of science. (Basically, I wanted photos of two years’ of root growth whilst demonstrating how tough these trees are with… more »

Below is the same photo of the young Ta-Jan mentioned back on 1st September 2020 in this post. The photo below was taken today, 15th September. This tree has not seen soil since July, as part of a little experiment to a) show how tough these trees are,… more »

Back Story These days it’s ‘just known’ that we/animals take in oxygen to survive (exhaling carbon dioxide as a waste product), while plants take in carbon dioxide to survive (releasing oxygen as a waste product). Yet right up into the… more »

In this little section on The Essentials For Life (As We Know It) so far, we’ve covered water, photosynthesis, and the nitrogen cycle, the last two being microbial in origin. This post brings these three essentials together in an essay that… more »

So far we’ve covered two essentials for life: water (for its flowing and carrying properties over a wide temperature range), and photosynthesis (for turning light energy into food which then flows up the food chain in an ecosystem). But no… more »

Photosynthesis is the process by which plants, algae, cyanobacteria, and a few other bacterial species convert light energy into chemical energy, which is stored as a food source. Photosynthetic organisms thus produce their own food, and are called… more »

Did you know there is only one substance that absolutely must be available to all living things on planet Earth? It isn’t oxygen — while that’s essential for animals and for non-photosynthetic processes within a plant, it’s a poisonous… more »

This earlier post described the four branch types peculiar to jujube trees: primary (extension) branches, secondary (non-extension) branches, fruiting mother branches, and fruiting branchlets. Also mentioned were the two bud types, main and secondary,… more »

Around 7pm the other evening I was perusing my trees, and — as I often do, gently pulled down a fruiting branchlet above to look more closely with my loupe at the flowers and developing fruits along it. To my absolute horror it came away in my hand! I… more »

Anthesis is the period or action of a flower opening, and this post will document two Ta-Jan flowers doing exactly that. Firstly, a refresher on the parts of a jujube flower to make this easier to follow along:     Stamens and anthers are mentioned a… more »

Back here were lots of pretty pictures of jujube flowers, but not exactly much in the way of information as to what you were looking at. As with that week, this week is another time-poor one I’m afraid. But while this post will also be… more »

This week I thought I’d follow up on the last paragraph of this older post that had been getting some recent attention, as well as my comment under that post. Fig. 1 below is the very same Lang referred to. This photo was taken on 19th October… more »

Rather than a post last week, we had threee guest comments under this older post — direct links are here, here and here — and a big thank you to Adrian and Airlie for sharing their experiences! I stupidly didn’t actually post those links publicly… more »